Officials at the university said they found posts on social media calling for a large party this weekend. The university then sent a letter to students and their parents, reminding them how to behave and what the consequences could be if they didn't.

"We were aware of some social sites who had put some things out and began to immediately work with students to prevent those things from happening," said Jim Hundrieser of Plymouth State University.

While Plymouth State University didn't point to any single post, there are tweets from the handle @FinnaRageTV referencing a planned event. The first said, "It's official: Plymouth State for Halloween."

The site didn't advocate causing trouble, but officials in Keene had pointed to the site after the riots, saying the party organizer had encouraged people to go to Keene that weekend. In a story on NHPR, the owner of FinnaRageTV said his company had nothing to do with the riots.

But with the riots fresh on everyone's minds, Plymouth State University officials were concerned about large parties, so they sent a letter to student and parents reminding them to act appropriately.

"Negative behaviors or violations of local, state or federal law either on or off campus, in or out of town, are a violation of university policy," the university said in the letter. "Students are also responsible for the actions of their guests."

"It could be anything up to expulsion," Hundreiser said. "It's certainly a range based off their behaviors, but it could be anything from disciplinary probation all the way through suspension or expulsion of the institution."

Two days ago @FinnaRageTV tweeted again, citing complications and saying it couldn't make Plymouth State.

The university plans to still have extra police and staff on standby just in case.

Students at Plymouth State University said the Keene riots and their associated consequences have resonated with them.

"A lot of people are posting on Yik Yak, 'Don't do what they did at Keene," said freshman Peter Esposito. "A lot of people are telling us to calm down, not do anything stupid."

"Obviously, we don't want a bad rap for our university, but at the same time we are just kids trying to have fun, too," said senior Rodney Martinez. "We just need to make sure we stay safe on campus and stay away from all that trouble."

Students said posting too much on social media can be a double-edged sword.

"A lot of people think this is a good way to have this get out there, but it's backfiring on them," said sophomore Kayla Wyland. "Because of them, they are just going to get in trouble for it."

State police said they will have troopers dedicated to Plymouth State and the downtown Friday and Saturday to back up local police.